Home / 387,941.36-535,315.56-218,171.84

Finding the Fourth Proportional to 387,941.36, 535,315.56 and 218,171.84

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Solution

The fourth proportional to 387,941.36, 535,315.56 and 218,171.84 is: 301,052.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,941.36 : 535,315.56 = 218,171.84 : x
  2. Step 2: Convert to fraction form
    387,941.36/535,315.56 = 218,171.84/x
  3. Step 3: Cross multiply
    387,941.36x = 535,315.56 × 218,171.84
  4. Step 4: Simplify right side
    387,941.36x = 116,790,780,705.83
  5. Step 5: Solve for x
    x = 116,790,780,705.83/387,941.36
  6. Step 6: Final answer
    x = 301,052.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.